<script setup>
import { User, Lock } from '@element-plus/icons-vue'
import { ref, watch } from 'vue'
import { useUserStore } from '@/stores'
import { useRouter } from 'vue-router'
import { userLoginService, userRegisterService, userIsLogin } from '@/api/user'
const form = ref()
const isLogin = ref(true)
const formModel = ref({
    username: '',
    password: '',
    repassword: ''
})
const user = ref({
    id: "",
    username: "",
    status: "",
    authority: ""
})


const userStore = useUserStore()
const router = useRouter()
// 登录请求
const login = async () => {
    await form.value.validate()
    const res = await userLoginService(formModel.value)
    user.value.id = res.data.data.user.id
    user.value.username = res.data.data.user.username
    user.value.status = res.data.data.user.status
    user.value.authority = res.data.data.user.authority
    userStore.setToken(res.data.data.token)
    localStorage.setItem("token", res.data.data.token)
    localStorage.setItem("id", user.value.id)

    const res1 = await userIsLogin()
    if (res1.data.data) {
        ElMessage.error('账号已登录')
    } else {
        ElMessage.success('登录成功')
        router.push('/chats')
    }
}

// 注册请求
const register = async () => {
    await form.value.validate()
    await userRegisterService(formModel.value)
    ElMessage.success('注册成功')
    // 切换到登录
    isLogin.value = true
}

const rules = {
    username: [
        { required: true, message: '请输入用户名', trigger: 'blur' },
    ],
    password: [
        { required: true, message: '请输入密码', trigger: 'blur' },
    ],
    repassword: [
        { required: true, message: '请再次输入密码', trigger: 'blur' },
        {
            validator: (rule, value, callback) => {
                if (value !== formModel.value.password) {
                    callback(new Error('两次输入密码不一致!'))
                } else {
                    callback()
                }
            },
            trigger: 'blur'
        }
    ]
}

// 切换重置表单内容
watch(isLogin, () => {
    formModel.value = {
        username: '',
        password: '',
        repassword: ''
    }
})
</script>

<template>
    <!-- el-row表一行 一行分成12份 -->
    <el-row class="login-page">
        <!-- 12表示占12/24 -->
        <el-col :span="12" class="bg"></el-col>
        <!-- offset间隙3份 -->
        <el-col :span="6" :offset="3" class="form">

            <!-- 登录表单 -->
            <el-form :model="formModel" :rules="rules" ref="form" size="large" autocomplete="off" v-if="isLogin">
                <el-form-item>
                    <h1>登录</h1>
                </el-form-item>
                <el-form-item prop="username">
                    <el-input v-model="formModel.username" :prefix-icon="User" placeholder="请输入用户名"></el-input>
                </el-form-item>
                <el-form-item prop="password">
                    <el-input v-model="formModel.password" name="password" :prefix-icon="Lock" type="password"
                        placeholder="请输入密码"></el-input>
                </el-form-item>
                <el-form-item class="flex">
                    <div class="flex">
                        <el-checkbox>记住我</el-checkbox>
                        <el-link type="primary" :underline="false">忘记密码？</el-link>
                    </div>
                </el-form-item>
                <el-form-item>
                    <el-button @click="login" class="button" type="primary" auto-insert-space>登录</el-button>
                </el-form-item>
                <el-form-item class="flex">
                    <el-link type="info" :underline="false" @click="isLogin = false">
                        注册 →
                    </el-link>
                </el-form-item>
            </el-form>

            <!-- 注册表单 -->
            <el-form :model="formModel" :rules="rules" ref="form" size="large" autocomplete="off" v-else>
                <el-form-item>
                    <h1>注册</h1>
                </el-form-item>
                <el-form-item prop="username">
                    <el-input v-model="formModel.username" :prefix-icon="User" placeholder="请输入用户名"></el-input>
                </el-form-item>
                <el-form-item prop="password">
                    <el-input v-model="formModel.password" :prefix-icon="Lock" type="password"
                        placeholder="请输入密码"></el-input>
                </el-form-item>
                <el-form-item prop="repassword">
                    <el-input v-model="formModel.repassword" :prefix-icon="Lock" type="password"
                        placeholder="请输入再次密码"></el-input>
                </el-form-item>
                <el-form-item>
                    <el-button @click="register" class="button" type="primary" auto-insert-space>
                        注册
                    </el-button>
                </el-form-item>
                <el-form-item class="flex">
                    <el-link type="info" :underline="false" @click="isLogin = true">
                        ← 返回
                    </el-link>
                </el-form-item>
            </el-form>
        </el-col>
    </el-row>
</template>

<style lang="scss" scoped>
.login-page {
    height: 100vh;
    background-color: #fff;

    .bg {
        background:
            url('@/assets/background.png') no-repeat center / cover;
        border-radius: 0 20px 20px 0;
    }

    .form {
        display: flex;
        flex-direction: column;
        justify-content: center;
        user-select: none;

        .title {
            margin: 0 auto;
        }

        .button {
            width: 100%;
        }

        .flex {
            width: 100%;
            display: flex;
            justify-content: space-between;
        }
    }
}
</style>